Glass-cutter&#39;s board.



G. W. HIGGINS a. J. UNGAR.

GLASS GUTTERS EGARD. APPLICATION FILED FEBJO, 1913.'

Patented June 23, 1914.

2 SHEETS-SHEET 1.

G. W. HIGGINS & J. UNGAR.

GLASS GUTTERS BOARD.

APPLLOATION FILED 11:13.10. 1913.

2 SHEETS-SHEET 2.

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.- George WH U76,

table b, Fig. 2, `or in any convenient way'.v The plate of glass to be cutis laid upon 'the' stops c and d, which latter are,

board.v Rigidly secured to its front edge is a guide rail g, which may bel -fit upon the guide g,

GEORGE W. HIGGINS AND JOSEPH UNGAR, 0F CLEVELAND, OHIO.

GLASS-CUTTERS BOARD.

Specification of Letters Patent. l Patentdi June 23, 1914.

Application led February 10, 1913. Serial No. 747,232.

To all whom it may conce/rn Be it known that we, GEORGE W. HIGGINS and JOSEPH UNGAR, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Glass-Cutters Boards, of which the following is a specification.

This invention relates to apparatus for facilitating the accurate cutting of plates or sheets of glass.

It requires care and skill to cut sheet glass with an ordinary cutter held in hand and bearing against a straight-edge, which latter is very difficult to set and hold in place.

The purpose of our present invention, therefore. is to provide means whereby panes of glass may be readily, accurately and expeditiously cut to sizelby any one, even though he be a mere tyro in the art.

Referring now to the accompanying drawings wherein embodiments of our invention are-illustrated Figure 1 is a plan view,'and

Fig. 2 is an end elevation of the apparatua Fig. 3 is a detailed side view, and Fig. 4 an end view, partly in section, ot the cutterhead, and its appurtenances. -F ig. 5 is a side view, partly in section, showing the arrangement for holding the cutter normally against the glass. Figs. 6 and 7 are detailed elevations of cutter handles. Fig. 8 is a plan view, and Fig. 9 is a side elevation of a modified form of the movable parts of the apparatus. Fig. l0 is a detailed cross section, and Fig. 11 a longitudinal section in detail of Figs. 8 and 9.

The reference letter a indicates a plane,- sinooth board of wood, or other suitable material, which .may be supported upon a board a with its edges abutting against the preferably, strips raised above and secured respective y along the front side and one end of the the board'a-a'long a stri of wood or metal, but a raised rectangu ar rib, as shown, is preferred. A movable uide arrangement, adapted to slide lengt wise of the board a, comprises a head-piece e grooved underneath to a sliding a straight-edged blade portion fsecured at right angles to the head e so as to project across the board, and a the handle h.y A runner z' is secured tothe undery side of the blade f it. level.

A groove lo is formed throughout .the length of the blade f, and rabbeted out on both sides to receive and slidably retain the slipper Z of a cutter-head j, which latter lprojects above and crosswise of the blade f, and has a bulging top suitably shaped for connear its outer end to keep .venience in graspirg it and holding it with the hand, as plainly shown in Figs. l to 5.-'

Means, such as the clamping screw m, are provided for locking the cutter-head to the blade, whenever it may be desired to do so.

Two lugs, or brackets, one above the other,

project laterally from the cutter-,head and p overhang the blade f, the upper luo o having a round hole drilled vertically through it, and the lowerlug n having a square aperture '2 therethrough alined with the upper hole. The round lshank of a cutter handle p is fitted to slide' through the hole in o, and an abruptly shouldered, enlarged and squared portion s of said cutter handle is formed to a sliding it in the yiaperture 2 of n, and hasitslower edges chamfered of, as

shown, to facilitate its entering thev hole 2.

A. glass cutter g, whichmay be either a diamond .or hardened steel, is iXedly secured to the lower end of the handle 'p solas to project below the lug n. A light spiral spring 7 is slipped overthe round shank of y), and

rests normally on the lug 0.. A knob' is screw threaded on the upper end of p, and provided with a' shoulder underneath, whereby the tension of the spring r may be adjusted. one'edge of the blade f is' grad-j uated, as shown at u, to units and fractionsf of the cutter-head j, and vindicating the disy v 'tance .of the cutter g from the stop strip c.

of linear measurement tobe read at one side Similar graduations, but running at right angles to the aforesaid, are marked. upon the boarda, either at the rear, as at o, or at the middle, or'front part of the board if pre ferred, for thev purpose .of showing the distance of the cutter q from the stop strip d.'

'If these last named graduations are placed at the rear of the board, a pointer fw to register with them may be attached to the end of the blade f; but if they are laced elsewhere on the surface of the board) they T he glass plate being placed on the board against the stops c an d, it will now be readily understood that the lengthto be cut 'must be read from one edge of the blade f.

is found by sliding the "square guide e-f until the pointer lw registers with the proper indication on the scale lv. The cutter handle p is set in the position chown in Fig. 3, and, while the guide-head e is held firmly in place with one hand, the cutter head j is grasped by the other hand with the palm pressing down upon the knob t, thus compressing the spring 1, and forcing the cutter g into `contact with the glass. The squared part s of the cutter handle shank enters the square aperture 2 in the plug n, which keeps the cutter from turning, whereupon the cutter-head is slid along the guide blade f, causing t e cutter to score an accurate line across the glass. to be cut is found by slidine the cutter-head j tothe proper point on the scale u, then the handle p is rotated 90 degrees to bring the cutter in position for a lengthwise cut, the cutter-head is grasped as before to depress the cutter, and the entire movable guide arrangement slid lengthwise of the board a with the grooved head e following the guide rib g. In the latter operation of scoring the glass lengthwise the cutter-head j, may, if desired, be first clamped with the screw m to the blade f, and, when a plurality of sheets are to be cut to the same' size, it will be particularly convenient to clamp it. The spring r is intended ordinarily to keep the cutter-raised above the glass, so that the shoulder of the square shank s 4normally bears up against the lug o; but the work may sometimes be expedited by placing said spring between the lugs 'n and 0, as shown in Fig. 5, so that it is in compression between' the upper lug 0 and the upper shoulder of the squared part s of the cutter handle shank, which keeps the cutter g down against the glass.

For use on heavy glass plates, we prefer a modified form of the movable guide blade f and cutter-head j 11, whereby the blade is strengthened, and the cutter disposed centrally thereof so. as to prevent its slipper binding in the f guideways by avoiding side Strains. In this construction the guide blade f, and its central rabbeted groove is made wider, and grooves may also be rabbeted out of its sides, as shown, so that the slipper Z may have additional bearings eneaging the sides of the' blades. The blade 1s centrally slotted, as at y, for the cutter g to project through, and the cutter handle p is set centrally in the cutter-head j. Thus the overhanging lugs n and o are dispensed with, an aperture e being formed through the cutter-head, above which is the round hole for the shank p, and below which is the square hole 2 for the squared shank s. The cutter g is preferably disposed-centrally of the cutter handle in this construction, as it may be also if desired in construction first described. And

The width v as illustrated in Figs. 7 to when it is desired to keep the cutter dowxr upon the lass, it is obvious that the springqn may be p aced inthe aperture e to erform the same function as when placed etween the lugs n and 0.

stantially the same in both constructions, but the modified form, while more rigid and eflieient, is somewhat more expensive to manufacture than that first described.

We further point out and distinctly claim as our invention- 1. A. suitable hoard, ka guide blade projecting laterally across said board, means for guiding said blade longitudinally of said board, ay cutter-head mounted to slide lengthwise of said blade, and normally rotatable glass cutting means carried by said cutter-head and adapted to reciprocate therein without turning.

2. A suitable board, 4a guide blade projecting laterally across said board, means for guiding said blade longitudinally of said board, a cutterhead mounted to slide lengthwise of said blade, a normally rotatable cutter handlecarried and guided by said cutter-head, and a glass cutter secured to said handle.

3. A. suitable board, a guide blade projecting laterally across said board, means for guiding said blade longitudinally of said board, a cutter-head mounted to slide lengthwise of said blade, and a glass cutter provided with a handle adapted to be rotatable in said cutter-headwhen raised but nonrotatable when depressed.

4. A. guide blade adapted to be moved and guided across a board, a cutter-head fitted to slide lengthwise of said blade, a glass cutter, and. means for mounting and guiding said cutter in said cutter-head whereby said cutter may be by the hand of the operator instantly depressed, and turned about so as to cut in dierent directions.' A

5. guide blade adapted to be moved and guided across a board, a cutter-head tted to slide lengthwise of said blade, an aperture in said cutter-head with a round hole above it and a square hole below it, a glass cutter, and a handle secured to said cutter having a cylindrical shank fitted to said round-hole and a squared part adapted to enter said square hole and be rotatable in said aperture.

6. A guide blade adapted to be moved and guided across a board, a cutter-head fit# ted to slide lengthwise yof said blade, an aperture in said cutterhead with a'round hole above it and a square hole below it, a glass cutter, a handle secured to said cutter having a cylindrical shank fitted to said round hole and a squared part adapted to enter said square hole and be rotatable in,

' lo The operation of the apparatus is sub- 7. A guide blade adapted to be moved and on said handle shank between said knob and 'ded across a boar/i, a cutter-head tted said cutter-head. Y to, slide lengthwise of said llade, an aper- In testimony whereof we afx our signature in said cutter-head with a round hole tures in the presence of two subscribing wit- 15 5 above it and a square hole below it, a glass nesscs, at' Cleveland, Ohio, this 1st day of cutter, a handle secured to said cutter hav- February, 1913.

ing a cylindrical shank fitted to said round f GEORGE W. HIGGINS.

hole and a squared part adapted to enter JOSEPH UNGAR. said square hole and be rotatable in said Witnesses:

10 aperture, a knob adjustably secured to the RAYMOND B. HOPPER,

upper end of said handle, and a 'spiral spring L. G. HOPPER. 

